The magnetic properties of GdNiAl4

G. A. Stewart; W. D. Hutchison; A. V.J. Edge; K. Rupprecht; G. Wortmann; K. Nishimura; Y. Isikawa

doi:10.1016/j.jmmm.2004.10.099

The magnetic properties of GdNiAl₄

G. A. Stewart^*, W. D. Hutchison, A. V.J. Edge, K. Rupprecht, G. Wortmann, K. Nishimura, Y. Isikawa

^*Corresponding author for this work

Materials Design and Engineering

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

DC magnetisation, electrical resistivity, specific heat and ¹⁵⁵Gd Mössbauer spectroscopy measurements demonstrate that the Gd sub-lattice of GdNiAl₄ undergoes two magnetic transitions (TN=24.7K, TN′=20.8K) as the temperature is decreased. Given that Gd ³⁺ is an S-state ion, a crystal field mechanism can be ruled out as the origin of similar behaviour observed elsewhere for RNiAl₄ with R=Pr_1-xNd_x (0≤x≤0.7) and Tb. Based on a comparison of point charge model calculations of the electric field gradient tensor with those measured at the ¹⁵⁵Gd nucleus, it is deduced that the magnetisation is aligned with either the b- or c-crystallographic axis of the orthorhombic structure.

Original language	English
Pages (from-to)	72-78
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	292
DOIs	https://doi.org/10.1016/j.jmmm.2004.10.099
State	Published - 2005/04

Keywords

Mössbauer spectroscopy-RE compounds
Rare-earth ternary compounds
Specific heat

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2004.10.099

Cite this

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title = "The magnetic properties of GdNiAl4",

abstract = "DC magnetisation, electrical resistivity, specific heat and 155Gd M{\"o}ssbauer spectroscopy measurements demonstrate that the Gd sub-lattice of GdNiAl4 undergoes two magnetic transitions (TN=24.7K, TN′=20.8K) as the temperature is decreased. Given that Gd 3+ is an S-state ion, a crystal field mechanism can be ruled out as the origin of similar behaviour observed elsewhere for RNiAl4 with R=Pr1-xNdx (0≤x≤0.7) and Tb. Based on a comparison of point charge model calculations of the electric field gradient tensor with those measured at the 155Gd nucleus, it is deduced that the magnetisation is aligned with either the b- or c-crystallographic axis of the orthorhombic structure.",

keywords = "M{\"o}ssbauer spectroscopy-RE compounds, Rare-earth ternary compounds, Specific heat",

author = "Stewart, {G. A.} and Hutchison, {W. D.} and Edge, {A. V.J.} and K. Rupprecht and G. Wortmann and K. Nishimura and Y. Isikawa",

year = "2005",

month = apr,

doi = "10.1016/j.jmmm.2004.10.099",

language = "英語",

volume = "292",

pages = "72--78",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

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T1 - The magnetic properties of GdNiAl4

AU - Stewart, G. A.

AU - Hutchison, W. D.

AU - Edge, A. V.J.

AU - Rupprecht, K.

AU - Wortmann, G.

AU - Nishimura, K.

AU - Isikawa, Y.

PY - 2005/4

Y1 - 2005/4

N2 - DC magnetisation, electrical resistivity, specific heat and 155Gd Mössbauer spectroscopy measurements demonstrate that the Gd sub-lattice of GdNiAl4 undergoes two magnetic transitions (TN=24.7K, TN′=20.8K) as the temperature is decreased. Given that Gd 3+ is an S-state ion, a crystal field mechanism can be ruled out as the origin of similar behaviour observed elsewhere for RNiAl4 with R=Pr1-xNdx (0≤x≤0.7) and Tb. Based on a comparison of point charge model calculations of the electric field gradient tensor with those measured at the 155Gd nucleus, it is deduced that the magnetisation is aligned with either the b- or c-crystallographic axis of the orthorhombic structure.

AB - DC magnetisation, electrical resistivity, specific heat and 155Gd Mössbauer spectroscopy measurements demonstrate that the Gd sub-lattice of GdNiAl4 undergoes two magnetic transitions (TN=24.7K, TN′=20.8K) as the temperature is decreased. Given that Gd 3+ is an S-state ion, a crystal field mechanism can be ruled out as the origin of similar behaviour observed elsewhere for RNiAl4 with R=Pr1-xNdx (0≤x≤0.7) and Tb. Based on a comparison of point charge model calculations of the electric field gradient tensor with those measured at the 155Gd nucleus, it is deduced that the magnetisation is aligned with either the b- or c-crystallographic axis of the orthorhombic structure.

KW - Mössbauer spectroscopy-RE compounds

KW - Rare-earth ternary compounds

KW - Specific heat

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